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What I said before....

Actually you were right in a technical sense Nick. THA is pulled up inside the ECU by Vc so in that sense it does share it. Just not in the AFM.

If it's N/A it shouldn't run beyond starting with the AFM disconnected...

Is code 41 set? Do you see code 51 at any throttle position above slightly cracked? If no to the first question and yes to the second the IDL situation is not as you claim...

What Nick said (except for the part about shared power). And since neither 24 or 42 effect fuel economy in a measurable way you have other problems. Also, failure of any part in the ABS system will not set TCCS codes...

I never said that. For all I know they are bad. For sure the one you cleaned likely is. The only things I told you is 1) you were testing them wrong and 2) when you test something it's important to tell us how you did it. In this case you were testing part of the AFM that has no bearing on...

Ohming it isn't a reliable check of the AFM and it doesn't check the wiring at all. Nor does it verify if Vc and ground are present. You should check those first and once verified follow by checking Ks....preferably at the ECU connector. Use the voltage and frequency functions on your meter for...

Well, for starters you should be checking the AFMs the right way, which is under power while on the car...

^ Nicely done. Same for post #2. The way things ought to be...

˙˙˙ƃuoɹʍ ʇı ƃuıop ǝɹ,noʎ

^ This. If the rest of the climate control system is working properly the coolant valve (or lack thereof) can't be a factor. Course, that's assuming the issue even exists...

No surprise there. Resetting clears the idle learned value. It also points to the cause of your problem...

The amount mentioned is for R12 not R134a. You should take the car to someone who knows what they're doing. MVAC mistakes can be expensive...

The TCCS has it's roots (as do most EFI systems) in a Bosch design. After all Bosch invented EFI. L Type systems (the L is for "luft", the German word for air) directly measure air flow into the engine to determine load. D Type systems ("druck", German for pressure) determine load...

G? I think you mean D or L. The stock EFI system is L type.

The port on the compressor is the low side. If you're going to charge with the engine running and AC on do it there using vapor (container upright).

You can certainly try those things but based on the symptoms it doesn't sound alarm related.

Well duh :). That would be built btw, not build. My bad. In the interest of accuracy coolant doesn't flow through the VSV but I understand what you were getting at. Not that your problem has anything to do with that assembly...

Actually that's one of the few things that won't hurt it, at least from a cleaning standpoint. It should still be avoided because of the cold though.

It appears you're talking more about keyless entry than theft deterrent even though they usually talk to each other. That said, assuming the newer device isn't networked (CAN-bus, et al), there's no reason later Toyota (or even other make and model) things can't be integrated into your car. As...